{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{3}{c}}
\hline\hline
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}\\
                    &\multicolumn{1}{c}{log(output price)}&\multicolumn{1}{c}{log(output price)}&\multicolumn{1}{c}{log(output price)}\\
\hline
log(labor)          &        0.10\sym{***}&        0.16\sym{***}&        0.13\sym{***}\\
                    &     (0.010)         &     (0.015)         &     (0.031)         \\
\hline
Adjusted \(R^{2}\)  &       0.883         &       0.698         &       0.634         \\
Observations        &       46704         &       46704         &       46704         \\
Sample              &         ASI         &         ASI         &         ASI         \\
State x Rural x Product FE&         Yes         &          No         &          No         \\
State x Rural x 4-digit NIC x Unit FE&         N/A         &         Yes         &          No         \\
State x Rural x 2-digit NIC x Unit FE&         N/A         &         N/A         &         Yes         \\
SE clusters:        &     Product         &     Product         &     Product         \\
\hline\hline
\multicolumn{4}{l}{\footnotesize Standard errors in parentheses}\\
\multicolumn{4}{l}{\footnotesize \sym{*} \(p<0.10\), \sym{**} \(p<0.05\), \sym{***} \(p<0.01\)}\\
\end{tabular}
}
